Engine running too hot issue?

[killerhurtalot]

So I have zero idea on why this is an issue since the car ran flawlessly for the past year and 8 months with the same set-up.

Stock N55 except I got a JB4.

So I switched cars for about 2 weeks and I had my car parked in a open air garage for that time. The weather got cold recently (like below freezing high 20s at nights) for the last week or so.

So I started driving my car again 2 days ago and the first day it ran fine, engine went up to temp fine, and nothing happened.

Then yesterday, went to a thanksgiving dinner. On the way, Hot engine temperature came up. even though the oil cooler was still at the normal 230-240ish degrees. Engine went into safe mode and refused to go over 2k RPM.

I asked my local group and the they pretty much agreed that it's the waterpump that failed.

Any other opinions on this before I take it in?

[MightyMouseTech]

It's the water pump.

[Elsabor67]

+1 on the water pump. It's happened to me twice. Make sure that you also replace the T-Stat while down there.